Editorial Technical Reference

Filter Assembly

This page explains how Filter Assembly is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A modular unit within a suction system designed to remove contaminants from the air or gas stream.

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Filter Assembly

Definition
The Filter Assembly is a critical component of a Suction System, responsible for capturing and removing particulate matter, dust, debris, and other contaminants from the air or gas being drawn through the system. It protects downstream equipment, such as pumps, fans, and motors, from damage and wear, and helps maintain air quality in the working environment. It is typically a replaceable or serviceable module consisting of a filter medium housed within a frame or casing. The assembly is available in various configurations to suit different suction system designs and operating conditions. Key parameters include filtration rating (5–40 μm, ISO 16889), flow rate (100–500 L/min, ISO 3966), operating temperature (-20–80 °C, ISO 8573-1), connection size (DN25–DN100, ISO 7005), pressure drop (0.02–0.05 MPa, ISO 3966), filter media (SS316L, ASTM A240), seal material (FKM, ASTM D2000), weight (5–20 kg), and IP rating (IP54–IP65, IEC 60529). These values are reference ranges and must be verified for the specific model and application. The assembly is designed for easy maintenance, with features that may indicate when the filter is clogged and requires cleaning or replacement. It is essential to select the correct filter media and housing materials based on the contaminants present and the operating environment. Always consult the manufacturer's documentation for detailed specifications and installation guidelines.
Working Principle
Contaminated air is drawn into the assembly housing. The air passes through the filter medium (e.g., pleated paper, fabric, mesh, or HEPA material), which physically traps particles based on size exclusion. Clean air exits the assembly and continues through the suction system. The assembly may include features for indicating when the filter is clogged and needs replacement or cleaning. The filter medium is housed in a frame or casing that provides structural support and ensures proper sealing. The pressure drop across the filter increases as it loads with contaminants, signaling the need for maintenance. The assembly is designed to operate within specified pressure and temperature limits to ensure effective filtration and prevent damage to the filter medium or seals.
Common Materials
Filter Media (e.g., Polyester, Paper, Fiberglass), Frame Material (e.g., Galvanized Steel, Aluminum, Plastic)
Technical Parameters
ParameterTypical rangeNotes & selection driver
Filtration Rating5–40 μmDetermines particle removal efficiencyISO 16889
Flow Rate100–500 L/minMaximum continuous flow capacityISO 3966
Operating Temperature-20–80 °CExceeding limits may degrade sealsISO 8573-1
Connection SizeDN25–DN100 mmFlange or threaded connectionsISO 7005
Pressure Drop0.02–0.05 MPaAt nominal flow rateISO 3966
Filter MediaSS316LCorrosion-resistant stainless steel meshASTM A240
Seal MaterialFKMResistant to oils and high temperaturesASTM D2000
Weight5–20 kgDepends on size and material
IP RatingIP54–IP65Protection against dust and water jetsIEC 60529

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Filter Element/Cartridge Part
    The primary filtering medium that captures contaminants. It is the replaceable core of the assembly.
    Material: Filter Media (e.g., Pleated Paper, Non-Woven Fabric)
  • Housing/Frame Part
    A rigid structure that holds the filter element in place, provides sealing surfaces, and integrates the assembly into the suction system ductwork.
    Material: Galvanized Steel, Aluminum, or Plastic
  • Gasket/Seal Part
    Ensures an airtight seal between the filter element and the housing, and between the assembly and the system, preventing unfiltered air from bypassing the filter.
    Material: Rubber, Foam, or Felt

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Filter Assembly.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0 to 10 bar (g)
flow rate: Up to 5000 m³/h
temperature: -20°C to 120°C
slurry concentration: Max 5% solids by weight
Media Compatibility
✓ Compressed air systems ✓ Industrial exhaust gases ✓ Process ventilation streams
Unsuitable: Highly corrosive chemical vapors (e.g., chlorine, strong acids)
Sizing Data Required
  • Required flow rate (m³/h)
  • Particle size distribution of contaminants
  • Allowable pressure drop across filter (Pa)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Filter media degradation
Cause: Chemical incompatibility with process fluid leading to swelling, embrittlement, or dissolution of filter media material
Seal failure and bypass leakage
Cause: Improper installation torque causing gasket compression set, thermal cycling, or particulate embedment in sealing surfaces
Maintenance Indicators
  • Sudden pressure drop increase beyond normal differential pressure range
  • Visible fluid leakage at housing seams or downstream of filter assembly
Engineering Tips
  • Implement condition-based monitoring with differential pressure trending and establish predictive replacement thresholds
  • Use proper installation procedures including clean sealing surfaces, correct gasket alignment, and manufacturer-specified torque sequence

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 16889:2022 (Hydraulic fluid power - Multi-pass method for evaluating filtration performance of filter elements) ANSI/ASHRAE 52.2-2017 (Method of Testing General Ventilation Air-Cleaning Devices for Removal Efficiency by Particle Size) DIN EN 1822-1:2019 (High efficiency air filters (EPA, HEPA and ULPA) - Part 1: Classification, performance testing, marking)

Quoted from the published standard.

Manufacturing Precision
  • Bore diameter: +/-0.025mm
  • Sealing surface flatness: 0.05mm
Quality Inspection
  • Pressure decay leak test (bubble point test)
  • Particle counting efficiency test (multi-pass method)

Manufacturers of Filter Assembly

4 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Zhejiang FONHO Automotive Co., Ltd.
Taizhou, Zhejiang, CN
Founded 2009200+ staff17,000 m²
IATF 16949:2016
Also makes: Air Dryer, Fuel Filter, Hydraulic Filter and 3 more
Managed by the manufacturer
Listed on the company's own website
China Porous Filters
Shijiazhuang, Hebei, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Jiangxi Ruiqian Auto Parts Co., Ltd.
Shangrao, Jiangxi, CN
Founded 1988300+ staff10,000+ Square Meters
ISO-TS16949:2009 ISO9001:2008 IATF 16964:2016
Also makes: Fuel Filter, Air Filter, Integrated Filter and 5 more
Stated by the company · profile compiled by CNFX from public sources
Skysorter
Anhui, CN
CE
Listed on the company's own website · profile compiled by CNFX from public sources

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

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Frequently Asked Questions

What is the typical filtration rating of this filter assembly?

The filtration rating is typically in the range of 5 to 40 micrometers, as per ISO 16889. This indicates the particle size that the filter can effectively capture. However, the exact rating depends on the specific filter medium used and the application requirements. Always verify the actual rating with the manufacturer for your model.

What are the operating pressure and temperature limits?

The operating pressure range is 1.0 to 1.6 MPa, and the operating temperature range is -20 to 80 °C (ISO 8573-1). Exceeding these limits may degrade seals or damage the filter medium. Confirm the exact limits for your specific assembly from the manufacturer's datasheet.

How do I know when the filter needs replacement or cleaning?

The assembly may include a differential pressure indicator or a clogging indicator that signals when the pressure drop across the filter exceeds a set threshold. Alternatively, you can monitor the pressure drop using external gauges. When the pressure drop reaches the maximum allowable value (typically 0.05 MPa at nominal flow), it is time to service the filter.

What are the available connection sizes?

The connection sizes range from DN25 to DN100, with flange or threaded connections as per ISO 7005. The specific connection type and size depend on the model and the suction system design. Verify the connection size with the manufacturer to ensure compatibility.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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